problem in feedback loop

[parthipan]

Hi i have problem in the feed back loop inside while loop.i have attached the demo program .in that example u need to give two string such as string 1= 1,3,5,7 and string2=2,4,6,8 if u run the program and enter this value and click ok button  the output string will be 12345678 .it is fine.if u continue with out stoping and change the value seperated by coomma in two string .the value of 3 string does not change this is because of feed back loop it retains the value in last iteration.is there any way to eleminate the value

[Hillman]

Hi parthipan,

I hope your well.

I have done some code for you. I used the search string for token vi.

Kind Regards,

Message Edited by Hillman on 09-22-2008 12:30 PM

[parthipan]

Hi i cant open the vi that u have posted since u have developed in labview 8.6.i have labview 8.5 can u change to 8.5 version and send me back.Thank you

[Hillman]

Hi,

Sorry about that.

Let me know what you think.

Kind Regards

[parthipan]

Hi i have implemented my code which contain many feedback loop.i have this problem with my code since i cannot post my code i made demo version(which work similar).you are trying to say if we use shift register instead of feedback loop we can get rid of this problem .or any other idea.Thanks a lot ya

[Hillman]

Hi,

Thanks for the post.

Well, as always with labview/programming, there are so many ways to do things.

I personally, never seem to use feedback loops. But the way i coded it seem to work. 

Kind Regards, 

[parthipan]

Hi i did not satisfied ya.i need to know why the feed back loop is not re initialising.is there any way to re initialise or itt is a bug in labview.i need to know answer for this only ya

[Hillman]

Hi,

shift registors and feedback nodes are very similar.

In your code I think the issue is the node isnt 'reset' to an empty string between button presses, its just remembering the last full combined string.

I would suggest looking at the example finder for my help on feedback nodes.

Kind Regards,

[parthipan]

what is the example finder i dont get u make it cleasr is there any link to this

[Hillman]

Hi,

Sorry.

Go to Help>>Find Examples>>Search Tab>>feedback Node in keywords>>Feedback Node - Build Array.vi.

This shows how to correctly re-initialise a feedback node.

Kind Regards,